Cadillac bulletin PIE0783
What it saysThis engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regard to the on the Check Engine Lamp illuminated on Driver… NHTSA’s full summary ↓
Cadillac filed this with NHTSA as a service bulletin dated Mar 8, 2024, received Mar 15, 2024, about the engine. It names 1 model year (2024). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationThis engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regard to the on the Check Engine Lamp illuminated on Driver Information Center (DIC).
Trouble codes it names: P0496 all 1 read from the document itself; NHTSA’s summary names none
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| PIE0783 | Service bulletin | Mar 8, 2024 | 10251675 | PDF, 71 KB |
What the document itself lists
The manufacturer titles it “Engineering Information - Check Engine Lamp Illuminated on Driver Information Center (DIC), DTC P0496 Set”.
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 4086528 | Engineering Information - Check Engine Lamp Illuminated on (DIC), DTC P0496 Set | 0.6 hrs |
Read by machine from the document NHTSA serves (2 pages), read Sep 30, 2026. A part number is shown only where it matches Cadillac’s own catalogue shape, an operation only with its code and time, and a description only where the reader got it whole; anything it could not settle is left out, and the PDF is the record. Times are the manufacturer’s warranty allowances, not a quote. Listings and prices on eBay Motors are the seller’s.
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The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 1 model year this bulletin names have filed 33 complaints with NHTSA since 2015. 8 of them name Engine — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
Problem with the fuel pump control module. Car broke down in front of my neighbor’s house. Now there is a problem with the transmission. It is slipping and there’s a clunking noise
2024 Cadillac XT4 · Engine · filed with NHTSA Jun 3, 2026 · ODI 11741880
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the engine
Source: same model, same component group57 other manufacturer communications filed against the Cadillac XT4 under the same component group (engine), newest first. The eight newest are listed; the rest are on the Cadillac list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 25-NA-249 | Service bulletin | Sep 3, 2025 | This service bulletin provides the correction to the condition of the Malfunction Indicator Lamp being illuminated and/or the DTC P149E set. |
| 00-06-01-026R | Service bulletin | Jun 5, 2025 | This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage. |
| 23-NA-153 | Service bulletin | May 15, 2025 | The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is… |
| 15-NA-010 | Service bulletin | May 7, 2025 | This service bulletin provides information to dealership personnel for new vehicles with less than 1,000 miles that may not pass California… |
| 21-NA-240 | Service bulletin | Apr 22, 2025 | This service bulletin provides diagnostic repair information to correct an oil leak on top of the engine that may be coming from cam carrier… |
| 25-NA-100 | Service bulletin | Apr 18, 2025 | This warranty administration bulletin provides policy information on vehicles outside of a California Emissions State who move to and regist… |
| PIE0794E | Service bulletin | Apr 14, 2025 | This engineering information (EI Lite) ends the need for gathering further information using the Field Product Reporting (FPR) App process f… |
| PIP5841E | Service bulletin | Apr 10, 2025 | This Preliminary information communicates the potential for condensation to freeze up inside the Crankcase Pressure Sensor causing dtc P04FB… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Cadillac, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Cadillac PIE0783 a recall?
No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the PIE0783 repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way. Every GM warranty extension on file lists the ones GM has filed.
Which vehicles does PIE0783 cover?
The manufacturer filed it against 1 model year: 2024 Cadillac XT4. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.